code: def get_3rd_point(a, b):
      """Get the 3rd point position given first two points.
  
      Parameters
      ----------
      a : tuple of float
          First point.
      b : tuple of float
          Second point.
  
      Returns
      -------
      tuple of float
          Third point.
  
      """
      direct = a - b
      return b + np.array([-direct[1], direct[0]], dtype=np.float32)
  
file_path: gluon-cv/gluoncv/data/transforms/bbox.py
imports: from __future__ import division
  import numpy
label_desc: Use image node_id 7 for calling a global function with example usage: get_3rd_point(a, b) and returns: unknown